JP2005227374A - Map data creating device and map data creating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to utilize a comprehensive map of the user's own handwriting. <P>SOLUTION: The user starts imaging function of a camera phone 1 and picks up a map handwritten by the user. In the camera phone 1, reduction scale in east/west direction and north/south direction between a plurality of particular points (start point, destination, and passing point) specified on the handwritten map is calculated in accordance with a map having a prescribed reduction scale and, in accordance with the calculated reduction scale, the handwritten map is segmented in a grid by unit distance and geographical information is made to correspond to each intersecting point. In navigation operation, user's own present position information between the start point and the destination is acquired by positioning by a GPS processing section 131 and, in accordance with the present position information, a prescribed mark is plotted at the intersecting point geographically nearest to the present position among the intersecting points of the grid. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a map data creation device and a map data creation method for plotting the current position of a moving object on a map from moment to moment and guiding a route to reach a destination.

  2. Description of the Related Art Conventionally, in an in-vehicle navigation device, a technique for automatically correcting and displaying a route when a route is input to the displayed map information with a pen input device or the like has been disclosed.

JP-A-6-249669

  By the way, in situations where the user goes to any destination on foot, etc., without using a vehicle or other means of transportation, only a clear sign (intersection, building, etc.) is clearly shown on the map rather than detailed information. This makes it easier for the user to grasp the travel route. However, in the above prior art, since map information specialized for navigation is displayed, detailed information is displayed, and the user does not know where to mark and may get lost. There was a problem of being expensive. In particular, when trying to reach a destination by presenting a map to a child or the like, it is difficult to understand with a map packed with detailed information. Furthermore, map information has to be downloaded from the Internet or the like, and there is a problem that it takes a fee such as a packet fee for this and takes time.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a map data creation device and a map data creation method that can use an original handwritten map in which easy-to-understand points are suppressed without displaying a detailed map.

  In order to achieve the above object, the map data creation device according to the invention described in claim 1 is characterized in that the drawing is performed on the basis of imaging means for imaging drawing map information on which a plurality of specific points are drawn, and map information of a predetermined scale. Based on the scale calculated by the scale calculating means, the scale calculating means for calculating the scale in the east-west direction and the north-south direction between a plurality of specific points of the map information, and the drawing map information for each unit distance in the east-west direction and the north-south direction Delimiting means for dividing in directions, associating means for associating display information with each intersection delimited by the delimiting means, and superimposing display information associated with the drawing map information captured by the imaging means by the associating means And display means for displaying them together.

  In order to achieve the above object, a map data creation device according to the invention described in claim 2 is based on receiving means for receiving drawn map information in which a plurality of specific points are drawn, and map information of a predetermined scale, Based on the scale calculated by the scale calculating means, the scale calculating means for calculating the scale in the east-west direction and the north-south direction between a plurality of specific points of the drawing map information, the drawing map information is displayed in the east-west direction for each unit distance. And a dividing means for dividing in the north-south direction, an association means for associating display information with the intersections divided by the dividing means, and display information associated with the drawing map information received by the receiving means by the association means And display means for displaying the images in a superimposed manner.

  Further, as a preferred aspect, for example, as described in claim 3, in the map data creation device according to claim 1 or 2, the scale calculation means includes a plurality of specific points on the drawn map information and the corresponding points. You may make it calculate the scale of the east-west direction and the north-south direction between the specific points on the said drawing map information by comparing the positional relationship with the specific point on the map information of a predetermined scale ratio.

  Moreover, as a preferable aspect, for example, as described in claim 4, the map data creating device according to any one of claims 1 to 3, further comprising map information receiving means for receiving map information of the predetermined scale ratio. You may do it.

  In order to achieve the above object, a map data creation method according to a fifth aspect of the present invention captures drawn map information in which a plurality of specific points are drawn by an imaging unit, and a plurality of specific points between the drawn map information. Is calculated based on a map having a predetermined scale ratio, and based on the scale ratio, the drawn map information is divided in the east-west direction and the north-south direction. Display information is associated with each other, and the display information associated with the drawing map information is superimposed and displayed.

  In order to achieve the above object, a map data creation method according to the invention described in claim 6 receives drawing map information in which a plurality of specific points are drawn by a receiving unit, and includes a plurality of specific points between the drawing map information. Is calculated based on a map having a predetermined scale ratio, and based on the scale ratio, the drawn map information is divided in the east-west direction and the north-south direction. Display information is associated with each other, and the display information associated with the drawing map information is superimposed and displayed.

  As a preferred mode, for example, as described in claim 7, in the map data creation method according to claim 5 or 6, the plurality of specific points are at least a starting point, a reaching point, and the arrival point from the starting point. One or more passing points that pass by the point may be included.

  As a preferred mode, for example, as described in claim 8, in the map data creation method according to claims 5 to 7, the map data having the predetermined scale ratio may be wirelessly received.

  According to the first aspect of the present invention, the drawn map information in which a plurality of specific points are drawn is picked up by the imaging means, and the drawn map information is obtained by the scale calculating means based on the map information of a predetermined scale ratio. The scales in the east-west direction and the north-south direction between a plurality of specific points are calculated, and the drawing means is divided into the east-west direction and the north-south direction for each unit distance based on the calculated scale by the dividing unit, and the association unit Thus, the display information is associated with each divided intersection, and the display information associated by the association unit is superimposed on the captured drawing map information and displayed on the display unit. There is no need to download, the usage fee such as packet charges can be reduced, and there is no extra information, original handwritten map with easy-to-understand points Advantage that it can be utilized as well as a map of predetermined scale ratio.

  According to the second aspect of the present invention, the drawing map information on which a plurality of specific points are drawn is received by the receiving means, and the drawing map is obtained based on the map information of a predetermined scale ratio by the scale calculating means. The scales in the east-west direction and the north-south direction between a plurality of specific points of information are calculated, and the drawing map information is divided into the east-west direction and the north-south direction for each unit distance based on the calculated scale by the dividing means, and associated Since the display information is associated with each divided intersection by the means and the display information associated by the association means is superimposed on the drawn map information and displayed on the display means, the drawn map information is displayed on the own terminal. Even if you do not prepare a map, there is an advantage that you can use an original handwritten map that has no unnecessary information and suppresses easy-to-understand points in the same way as a map with a predetermined scale ratio.

  According to a third aspect of the present invention, the scale calculation means causes the positions of the plurality of specific points on the drawn map information and the plurality of specific points on the map information of the predetermined scale ratio corresponding to the specific points. Compare the relations and calculate the east-west and north-south scales between specific points on the drawing map information, so there is no need to download map data etc., and reduce the usage fee such as packet charges Further, there is an advantage that an original handwritten map that has no unnecessary information and suppresses easy-to-understand points can be used in the same manner as a map with a predetermined scale ratio.

  According to the invention described in claim 4, since the map information receiving means receives the map information of the predetermined scale ratio, there is no extra information, and the original handwritten map with suppressed easy-to-understand points Can be used in the same way as a map with a predetermined scale ratio, and even when there is a change in map information with a predetermined scale ratio, it is possible to obtain an advantage of being able to respond quickly.

  According to the fifth aspect, the image capturing unit captures the drawn map information in which a plurality of specific points are drawn, and the scales in the east-west direction and the north-south direction between the plurality of specific points of the drawn map information are predetermined. Calculated based on a map having a scale ratio of, and based on the scale ratio, the drawing map information is divided in the east-west direction and the north-south direction, display information is associated with each of the divided intersections, and the drawing map information Since the corresponding display information is superimposed and displayed, it is not necessary to download map data, etc., it is possible to reduce usage charges such as packet charges, and there is no extra information, There is an advantage that an original handwritten map in which easy-to-understand points are suppressed can be used in the same manner as a map with a predetermined scale ratio.

  According to the invention of claim 6, the receiving unit receives drawing map information in which a plurality of specific points are drawn, and the scales in the east-west direction and the north-south direction between the plurality of specific points of the drawing map information are reduced. Calculating based on a map having a predetermined scale ratio, dividing the drawing map information in the east-west direction and the north-south direction based on the scale ratio, associating display information with each of the divided intersections, and drawing Since the display information associated with the map information is superimposed and displayed, the original handwritten map that has no unnecessary information and has easy-to-understand points without having to prepare drawing map information on its own terminal. Can be used in the same manner as a map having a predetermined scale ratio.

  According to the invention of claim 7, the plurality of specific points include at least a starting point, a reaching point, and one or more passing points passing from the starting point to the reaching point. Therefore, there is an advantage that an original handwritten map that has no unnecessary information and suppresses easy-to-understand points can be used in the same manner as a map having a predetermined scale ratio.

  According to the invention described in claim 8, since the map data having the predetermined scale ratio is wirelessly received, an original handwritten map having no unnecessary information and suppressing easy-to-understand points has a predetermined scale. It can be used in the same manner as a rate map, and there is an advantage that it can quickly respond even when there is a change in map information at a predetermined scale rate.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings as an example applied to a camera-equipped mobile phone.

A. Configuration of Embodiment FIG. 1 is an external view (open state: front view, rear view) of a camera-equipped mobile phone 1 according to an embodiment of the present invention. The mobile phone 1 in the present embodiment has a two-fold structure including a lid portion 2 and a main body portion 3. The speaker 101 is provided on the front side of the lid portion 2 and outputs sound during a call in the telephone mode. The display unit (main display unit) 102 is a color liquid crystal, has a resolution of QVGA, and can display captured images and downloaded images. The antenna 103 is provided on the back surface of the main body and is extendable.

  The camera key 104 is a key for instructing the transition to the camera mode in the power-on state and the activation of the imaging unit 130 and the DSP 129 described later. The mail key 105 is a key for instructing to shift to the mail mode and load the mail program. The cross key 106 is a key for instructing the movement of the cursor and the movement of the focus (selection). The enter key 107 is a key for determining mode selection or determining selection. The address key 108 is a key for displaying address book data.

  A network connection key 109 is a key for connecting to the Internet. The clear key 110 is a key for canceling selection or the like. The on-hook key 111 is a key for connecting a line. The off-hook key 112 is a telephone mode / camera mode combined power off key, a telephone mode startup power on key, and a key for disconnecting the line. The numeric keypad 113 is a key for performing character input and dial input. The microphone 114 is provided at the lower part of the main body, and performs voice input during a call.

  The recording microphone 115 inputs voice memos, voices during movie shooting, and the like. The sub display unit 116 is provided on the back surface of the lid, and is used for date and time display, incoming call notification, incoming mail notification, auxiliary screen at the time of shooting a still image or moving image, etc. in a state where the mobile phone 1 is closed. . The notification LED 117 performs incoming call notification and mail incoming call notification.

  The imaging lens 118 is provided on the back surface of the lid 2 and below the sub display unit 116, and captures still images and moving images. In the present embodiment, a handwritten map on which a route from the starting point to the destination is drawn is photographed. The flash LED 119 is lit when taking a still image or a moving image, and prevents underexposure. The notification speaker 120 notifies an incoming call or an emergency, and is arranged on the back surface of the main body 3 so that a notification sound can be heard even when the lid 2 is closed to the main body 3.

  Next, FIG. 2 is a block diagram showing the configuration of the camera-equipped mobile phone 1 described above. In the figure, a wireless transmission / reception unit 121 performs communication processing including modulation / demodulation based on the PSK method and terminal authentication processing based on the CDMA method, such as transmitting / receiving voice and data (mail data) via the antenna 103 and modulating / demodulating the wirelessly. Do.

  The control unit 122 controls the device including WWW connection control. In particular, in this embodiment, map data that can be used for navigation is created by embedding geographical position information (latitude / longitude) in a predetermined point with respect to the captured handwritten map (drawing map information). And a navigation operation for plotting the movement route of the user carrying the mobile phone 1 using the map data based on the handwritten map. The communication data processing unit 1221 includes a CLEP audio decoding processing circuit, a packet data generation circuit, and a packet data restoration circuit, and performs data processing according to a communication protocol.

  The system ROM 1222 stores a basic system program for mainly controlling overall wireless communication processing in the mobile phone. The audio interface 1223 performs input / output processing of the audio signal processed by the communication data processing unit 1221, inputs the audio from the microphone 114 or the recording microphone 115, converts it to an audio signal, and converts the audio signal from the speaker 101. Output.

  The address data bus processing unit 123 controls and manages data input / output timing and the like with the peripheral circuit (dotted line frame). The RAM 124 stores various data generated in the device, such as data used in the telephone mode, such as address book data and mail data, and image data shot in the camera mode. The program ROM 125 is composed of a rewritable flash ROM and stores various application programs.

  The display module system driver 128 drives the sub display unit 116, the main display unit 102, and the LEDs 117 and 119. The sound source IC 126 generates a ring tone. The amplifier 127 amplifies the audio signal from the sound source IC 126 and outputs it from the speaker 120. The imaging device 130 is configured by a CCD or a CMOS, and captures an image focused by the imaging lens 118 as a color image. The DSP 129 encodes the image captured by the imaging device 130.

  The GPS processing unit 131 is a geodetic satellite of at least about 4 (or less but less accurate) among the geodetic satellites (NAVSTAR: currently 24 orbiting the earth) launched by the US Department of Defense. Of the current position by receiving the radio wave (1.22760G / 1.57542GHz) transmitted from the GPS antenna 132, calculating the phase of the radio wave (difference in reception timing), and performing triangulation between the receiver and the satellite -Acquire location information consisting of longitude (-altitude) information.

B. Operation of Embodiment Next, the operation of the above-described embodiment will be described. Here, FIG. 3 is a flowchart for explaining the operation of the mobile phone 1 according to the present embodiment. First, the user creates a handwritten map to the destination as shown in FIG. 4 (S10). Here, point B is the starting point (current position), point A is the destination, and point C is the passing point. The scale is preferably such that it arrives within an hour of walking. In addition, as the specific points to be added to the handwritten map, the destination, the starting point, and the passing point are combined to be 3 to 4 or more.

  Next, the imaging function of the camera-equipped mobile phone 1 is activated, and the created handwritten map is photographed so as to fill the screen of the main display unit 102 (S12). Next, as shown in FIG. 5, the user moves the cursor to the specific point added on the photographed handwritten map with the cross key 106 and presses the enter key 107 (S14). When the determination key 107 is pressed, the camera-equipped mobile phone 1 acquires the position of the cursor at that time, that is, the position information of the specific point, and associates the specific point with the position information (S16). Two methods are conceivable for acquiring position information. The first method is to acquire positioning data from the GPS processing unit 131 or to acquire longitude / latitude from the past GPS history. The second method is to acquire the latitude / longitude of the point from the address or telephone number.

  Next, based on the positional relationship between the specific points of the photographed handwritten map, a map having a predetermined scale ratio is acquired from the network and compared (S18). Here, FIGS. 6A and 6B are conceptual diagrams showing a state in which the handwritten map is compared with the actual map. As shown in the drawing, in order to compare the positional relationship between the specific points A, B, and C between the handwritten map and the actual map, the linear distance between the specific points, and the x direction (east-west direction) and y direction (north-south direction). Get the distance component.

  In the handwritten map, as shown in FIG. 6A, between the specific points BC, the straight line distance BC, the x component BCx, the y component BCy (indicated by the upper bar in the figure), the specific points C-A Is a linear distance AC, an x component ACx, and a y component ACy. In the actual map, as shown in FIG. 6B, the distance between the specific points BC is linear distance BC ′, the x component BC′x, the y component BC′y, and the distance between the specific points CA. The linear distance AC ′, the x component AC′x, and the y component AC′y.

In a handwritten map, the scale is rough, so it is difficult to specify one scale for the entire map. Therefore, scales are determined in the x direction (east-west direction) and y direction (north-south direction) between the specific points (S20). Scale _{SH AC} in the x direction (east-west direction) at a particular point AC is obtained by the equation 1.

The scale SV _AC in the y direction (north-south direction) at the specific point A-C is obtained by Equation 2.

The scale SH _BC in the x direction (east-west direction) at the specific point B-C is obtained by Equation 3.

The scale SV _BC in the y direction (north-south direction) at the specific point B-C is obtained by Expression 4.

Next, the unit distance a is obtained from each of the reduced scales SH _AC , SV _AC , SH _BC , and SV _BC (S 22). The unit distance a is the minimum unit for drawing a plot on a handwritten map when it is recognized that the mobile body (user carrying the mobile phone 1) has moved by this distance. Accordingly, when the unit distance a is moved, the plot interval increases in the direction where the scale is large, and the plot interval decreases in the direction where the scale is small.

  Next, as shown in FIG. 7, the specific points A, B, and C on the handwritten map are separated by a unit distance a (S24). As shown in the figure, the separation interval by the unit distance a increases in the direction where the scale is small, and the separation interval by the unit distance a decreases in the direction where the scale is large.

  Next, as shown in FIG. 8, the handwritten map is divided into a grid pattern based on the divided points, and the latitude / longitude of each intersection is obtained and embedded (S26). When the handwritten map taken into the mobile phone 1 and the grid with the latitude and longitude embedded are superimposed, the result is as shown in FIG. The grid may be created directly invisible on the handwritten map, or a layer structure may be formed to draw the handwritten map and grid on the respective layers.

B-2. Navigation (tracking)
Next, a description will be given of a navigation operation for plotting a moving route until a moving body (a user carrying the mobile phone 1) actually reaches the destination. Here, FIG. 10 is a flowchart for explaining the navigation operation using the camera-equipped mobile phone 1 according to the present embodiment.

  First, it is determined whether or not navigation is started (S30), and when navigation is started, the handwritten map taken in the main display unit 102 is displayed (S32). Next, the position information (latitude / longitude) of the current point is acquired from the GPS processing unit 131 (S34), and the latitude / longitude of each intersection is embedded according to the latitude / longitude of the position information of the current point (or Plot at the nearest intersection on the handwritten map) (S36).

  Next, it is determined whether or not the navigation is finished (S38), and if it is forcibly terminated for some reason, the process is finished even before reaching the destination. On the other hand, if the navigation has not been forcibly terminated, it is determined whether or not the destination A has been reached (S40). If the destination A has not been reached, the process returns to step S34 to perform the above-described processing, that is, the mobile object. Continue drawing the plot on the grid of the handwritten map as you move. FIG. 11 is a schematic diagram showing a state of plotting on the grid on the handwritten map in the navigation operation. As shown in FIG. 11, on the handwritten map, P1 to P11 are plotted almost faithfully with respect to the actual moving path L of the moving body (the moving path L is not actually displayed). Then, when the moving body reaches the destination A, the process is terminated.

  In the handwritten map, the scale between the specific points is rough, and the actual distance relationship cannot be expressed accurately. However, according to the present embodiment, as shown in FIG. It is possible to plot on the handwritten map almost faithfully. In addition, since it is not necessary to download map data or the like, it is possible to reduce traffic and to reduce usage charges such as packet charges. In addition, there is an advantage that it is difficult to make a mistake because an original handwritten map (no extra information) that suppresses points easy for children to understand can be used.

  In the above-described embodiment, when the user wants to plot on the road, the road of the handwritten map is filled with a specific color, and when the handwritten map is captured by the camera-equipped mobile phone 1 and converted into data, RGB or the like is used. You may make it recognize color information and recognize the place filled with the specific color as a road.

  Further, in the embodiment described above, in order to simplify the procedure for moving the cursor to the specific point in steps S14 and S16 in FIG. You may make it fill a point with a specific color.

  In the above-described embodiment, when a navigation point approaches a specific point (passing point) that serves as a mark, a preset voice (or musical sound) may be output and notified to the user. .

C. Processing from Received Mail In the above-described embodiment, the travel route L is plotted on the handwritten map taken with the camera-equipped mobile phone, but when attached to an e-mail from another camera-equipped mobile phone, The movement route L may be plotted on the handwritten map image received wirelessly. Hereinafter, this case will be described in detail.

  First, when the mail mode process is started by detecting the operation of the mail key 105 by the user, the control unit 122 reads the mail data stored in the RAM 124. On the other hand, following the operation of the mail key 105, when an instruction for inquiring whether or not a new mail addressed to the user has been received from the network (not shown) is detected (S50), a new message is received in accordance with this inquiry. The mail is added to the reception list (S52), and the reception list is displayed on the display unit 102 (S54).

  Next, it is determined whether or not a specific mail text has been selected from the display state of the reception list (S56). If there is a selection, the selected mail text is displayed (S58). On the other hand, if there is no selection, the process returns to S54.

  If an attached file exists for the selected mail text, the process proceeds to step S62, and it is determined whether or not the attached file is a handwritten map in which the position of a specific point is associated (S60 and S62). At this time, as a method of determining whether or not the attached file is a handwritten map in which the position of a specific point is associated, the attached file is an image file and is formatted in a DCF format indicating that the attached file is taken by a camera. And whether or not a plurality of pieces of position information are recorded in a predetermined area of the Exif data.

  When it is determined that the attached file is a handwritten map in which the position of the specific point is associated, the process proceeds to step S18 in FIG. On the other hand, if the attached file is not a handwritten map in which the position of the specific point is associated, the attached file is reproduced and output (S66). In this case, for example, if the attached file is a still image file or a moving image file, these files are expanded and displayed on the display unit 102, and if the file is an audio file, decoding processing is performed and a report sound is output from the notification speaker 120. To do.

  When an instruction to display the mail text is detected again (S68), the process returns to step S58. If there is no attached file in step S60, it is determined whether or not there is a cancel instruction (S64). If there is a cancel instruction, the mail mode is terminated. On the other hand, if no cancel instruction has been detected, the process returns to step S58.

  In this way, even if the attached file received by attaching to the received mail or the like is a handwritten map without taking an image with the camera-equipped mobile phone that is the terminal itself, the movement route L can be plotted accurately, so handwriting On the map sending side, it is possible to save the trouble of guidance by plotting the travel route L. On the other hand, the receiving side can easily grasp the route to the destination without obtaining accurate map information. can do.

  In the embodiment described above, only the camera-equipped mobile phone has been described. However, the present invention is not limited to this, and a normal digital camera (photographing a handwritten map) and a mobile phone (GPS function) may be combined.

1 is an external view (open state: front view, rear view) of a camera-equipped mobile phone 1 according to an embodiment of the present invention. 1 is a block diagram showing a configuration of a camera-equipped mobile phone 1. FIG. 4 is a flowchart for explaining the operation of the mobile phone 1 according to the present embodiment. It is a schematic diagram which shows an example of a handwritten map. It is a schematic diagram for demonstrating the procedure which acquires positional information with respect to the specific point on a handwritten map. It is a conceptual diagram which shows a mode that the handwritten map and the actual map are compared. It is a conceptual diagram which shows a mode that the specific points A, B, and C on a handwritten map are divided by unit distance a. It is a conceptual diagram which shows a mode that a handwritten map is divided | segmented into a grid shape based on the divided point and the latitude and longitude of each intersection are calculated | required. It is a conceptual diagram which shows the state which piled up the handwritten map and the grid which added the positional information. It is a flowchart for demonstrating the navigation operation | movement using the mobile phone 1 with a camera by this embodiment. It is a schematic diagram which shows the mode of the plot on the grid on a handwritten map in navigation operation | movement. 4 is a flowchart for explaining an operation at the time of mail mode processing in the mobile phone 1 according to the present embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Camera-equipped mobile phone 101 Speaker 102 Main display part (display means)
103 Antenna (receiving means, map information receiving means)
104 to 113 Input section 111 On-hook key 112 Off-hook key 113 Numeric keypad 114 Microphone 115 Recording microphone 116 Sub display section 117 LED
118 Imaging lens (imaging means)
119 LED for flash
120 Speaker 121 Radio Unit 122 Control Unit (Scale Calculation Unit, Separation Unit, Position Information Association Unit)
1221 Communication data processing unit 1222 System ROM
1223 Audio interface 123 Address data bus processing unit 124 RAM
125 program ROM
126 Sound source IC
127 AMP
128 Display module system driver 129 DSP (imaging means)
130 Imaging device (imaging means)
131 GPS processor

Claims (8)

Imaging means for imaging drawing map information in which a plurality of specific points are drawn;
Based on map information of a predetermined scale ratio, scale calculation means for calculating scales in the east-west direction and the north-south direction between a plurality of specific points of the drawn map information;
Based on the scale calculated by the scale calculation means, delimiter means for dividing the drawing map information in the east-west direction and the north-south direction for each unit distance;
Associating means for associating display information with each intersection delimited by the delimiting means;
A map data creation device comprising: display means for superimposing display information associated with the drawing map information captured by the image capturing means by the association means. Receiving means for receiving drawing map information in which a plurality of specific points are drawn;
Based on map information of a predetermined scale ratio, scale calculation means for calculating scales in the east-west direction and the north-south direction between a plurality of specific points of the drawn map information;
Based on the scale calculated by the scale calculation means, delimiter means for dividing the drawing map information in the east-west direction and the north-south direction for each unit distance;
Associating means for associating display information with each intersection delimited by the delimiting means;
A map data creation device comprising: display means for superimposing display information associated with the drawing map information received by the reception means with the association means. The scale calculation means compares the positional relationship between a plurality of specific points on the drawing map information and a plurality of specific points on the map information corresponding to the predetermined scale ratio, and specifies the specific points on the drawing map information. The map data creation device according to claim 1 or 2, wherein scales in the east-west direction and the north-south direction between points are calculated. 4. The map data creation device according to claim 1, further comprising map information receiving means for receiving map information of the predetermined scale ratio. The imaging unit captures the drawn map information in which a plurality of specific points are drawn,
The scale of the east-west direction and the north-south direction between a plurality of specific points of the drawing map information is calculated based on a map having a predetermined scale ratio,
Based on the scale ratio, the drawing map information is divided in the east-west direction and the north-south direction,
The display information is associated with each separated intersection,
A map data creation method, wherein the display information associated with the drawn map information is displayed in a superimposed manner. Receive drawing map information in which a plurality of specific points are drawn in the receiving unit,
The scale of the east-west direction and the north-south direction between a plurality of specific points of the drawn map information is calculated based on a map having a predetermined scale rate,
Based on the scale ratio, the drawing map information is divided in the east-west direction and the north-south direction,
The display information is associated with each separated intersection,
A map data creation method, wherein the display information associated with the drawn map information is displayed in a superimposed manner. The map data according to claim 5 or 6, wherein the plurality of specific points include at least a starting point, a reaching point, and one or more passing points that pass from the starting point to the reaching point. How to make. 8. The map data creation method according to claim 5, wherein the map data having the predetermined scale ratio is received wirelessly.

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